I´ve made a small collection of contemporary paintings for you at
http://hem.bredband.net/haseri/costume1600/index.htm
Most of the first immigrants to Delaware in the 1640's came from the countys of Västmanland and Värmland, and was of Finnish origin. (Finland was a part of the swedish kingdom.) This probably would have affected their style of clothing.
The most comprehensive modern book on the era may be (I have not read it yet):
BAROCKENS KONST (Baroque Art). ISBN:9187896311 by Göran Alm, Claes Ellehag, Magnus Olausson, et. al
Printed 1997. "Descriptive book on Baroque art and architecture in Sweden with the following essays: Architecture 1650-1690; Architecture 1690-1730; Landscape Architecture; Interior Design; Textile Art; Stucco; Sculpture; <b>The Secular Painting and The Religious Painting;</b> Gold Smith Art and Glass Art."
The Vasamuseum
http://www.vasamuseet.se/
depicts the find of the early 17th century ship. Maybe there is something of interest for you?
(Note for my swedish mates: Jag har bott i Stockholm sen 1986 och har ännu inte varit på Vasamuseet [:I] - finns det nåt av intresse för Maeve där?)